/*
 * Licensed to Lindorm under one or more contributor license
 * agreements. See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership. Lindorm
 * licenses this file to you under the Apache License, Version 2.0 (the
 * License); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package com.alibaba.lindorm.stream.engine.function;


import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.List;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface UdfFunction {

  /**
   * Description of the function
   * @return
   */
  String description() default "";

  /**
   * Version of the function.
   * @return
   */
  String version() default "";

  /**
   * return type of function
   * @return
   */
  String returnType();

  /**
   * arguments of funtion
   * @return
   */
  String arguments();

}
